the mean of eight number is 25 if 5 is subtracted from each number what will be the new mean
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Answer:
Mean = 20
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Answer:
new mean =20
25 = (X1+x2.....+x8)/8
25×8= (X1+X2.......+x8)
200 = (X1+ X2.......+x8)
let new mean =a
a=(X1+X2.......+x8)-5×8/8
a=(X1+X2.......+x8)-40/8
putting the value
a= 200-40/8
a=160/8
a=20
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